Combined knife and hammer



(No Model.)

J. O. PARKER.

COMBINED KNIFE AND HAMMER. No. 391,268. I Patented Oct. 16, 1888.

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NITED STATES ATENT Fries.

JOEL O. PARKER, OF GRAND RAPIDS, MICHIGAN.

SPECIFICATION forming part of Letters Patent No. 891,268, dated October 16, 1888.

Application filed January 7, 1888. Serial No. 260,263.

To aZZ whom it may concern.-

Be itknown that I, JOEL C. PARKER, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and use ful Improvements in a Combined Knife and Hammer; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in a tool adapted to perform both the functions of a knife and hammer. Heretoforc the part operating as a hammer-head has been permanently attached to the knife or to some neces sary part of the same.

The objects of my invention are, first, to so construct the device that when the hammer is detached the knife shall be complete and serviceable as such; second, to so adjust the hammer-head that when attached to the knife it will add force to a blow struck by the edge of the knife and qualify it to be used as a hatchet for chopping; third, to provide a universal tool for use in hunting or camping, readily adapted to perform the functions of knife, hammer, or hatchet, as occasion may require.

111 the accompanying drawings, Figure 1 is a perspective of my device, showing the hammer secured by a key; Fig. 2, a side elevation of a portion of the same, showing a different manner of attaching the hammer to the knife; Fig. 3, a plan view of Fig. 2 with the hammer removed; Fig. 4, a vertical section on thelinemscof Fig. 2, and Fig. 5 a longitudinal section of a portion of Fig. l.

A represents the blade of a knife of suitable size and shape; B, a hammer-head having the usual face at one end and a dovetail groove, 0, at the other adapted to embrace the back of said knife, which is made to fit within said groove and reduced in thickness toward the handle, where, at G, it will permit the sides of the groove 0 to pass over and embrace the blade.

D is a key which passes through a suitable opening or mortise in the hammer and en- (No model.)

gages with a notch in the back of said knife. The edges of the key are inclined toward each other in the direction of the face of the hammer and engage with the sides of the notch, which have corresponding inclinations which tend to draw the key downward toward the edge of the knife. The under side of the key engages with the bottom of the opening in the hammer, and thus tends to seat said hammer firmly upon the back of the knife.

E is a screw the head of which engages with a groove in the key, which groove does not extend the entire length of said key, the result being that the entire removal of the key from the hammer is prevented.

If the described key is used, the dovetail feature of the knife-back and groove 0 may be omitted and their sides made parallel. If the dovetail feature is retained, the key may be omitted and the knife made slightly tapered, as shown in Fig. 3, and at a point where the groove 0 fits tightly upon the knife astop, F, is raised to prevent the hammer from becoming too tightly wedged upon the knife. Any thickening of the blade to prevent the head from moving farther along on the blade will serve the purpose of the stop F. Other means of securing the hammer to theknife-blade may be resorted to.

It will be observed that when the head is detached a complete knife remains, useful as such; also, that when the head is attached, its weight being opposite the cutting-edge of the knife, will add force to a blow struck either on the edge or back of the knife without jarring the hand, thus rendering the tool effective either as a hammer or hatchet.

What I claim, and wish to secure, is as follows:

1. In combination with a knife, a detachable hammer-head attached to the blade opposite the cutting edge, substantially as described.

2. The combination of a hammerhead having a dovetail groove, a knife the back of which fits within said groove, said back being thinner at one portion to permit of insertion within said groove and thickened nearer the outer end to form a stop to prevent said head from slipping off the forward end thereof, substantially as described.

ing a dovetail groove, a knife the back of 5 which fits within said groove and provided with a stop engaging with said hammerhead to prevent it from slipping off the forward end of said back, substantially as described.

In testimony whereof I affix my signature in 7 presence of two Witnesses. 3. The combination of a hammerhead hav- JOEL G. PARKER.

Witnesses:

SARAH A. MOULTON, LUTHER V. MoULToN. 

